Possible Clues:

• Polar bear heading off, for a change, to be living in trees
• Like lemurs
• Sloth descriptor
• Tree-dwelling fellow, a right drag at first
• Tree-dwelling, headless snake climbs — true!
• Wild boar ... it's true, is like a tree
• Living among trees
• Like kinkajous
• Out on a limb?
• A round barrel manufactured from trees